1982 CB750 C Tail light and indicators.

[thisisbuckwheat]

Hey dudes and dudettes.

Apologies if there is a topic for this somewhere already, but I know how much you guys love helping, so I thought I would just go for it.

A pal of mine has asked for some help with his '82 CB 750 C.

His brake light wasn't working, so he replaced the bulb and his LED indicators stopped working. He claims he moved some wires around, but nothing serious, and they stopped. They were working before.

Important things to note:

1. The horn no longer works either. Leading me to think it's something with the switch.
2. The fuse is fine.
3. I can't see any loose connections, frayed wires, or anything else fishy, but I haven't taken the tank off for a better look yet.
4. The stop light on the tail light doesn't work either - probably a switch issue at the brake, right?

Any insight you guys could provide would be super rad.

Happy Sunday!

 

[Grazz256]

I've gotta ask, why did he move wires around to change the bulb?

Looking at the 900C wiring diagram (don't have the 750 handy, but should be close to the same) everything that has stopped working is pointing to the fuse.. I would try to change it even though it looks fine.

The next thing I would check is for voltage at the tail light both with and without the brakes on (900C has a combined bulb so there should always be voltage on one of the pins). If you have voltage trace out the grounds.l

Cheers